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Question

If an ideal pulley system can lift a load of 2000 N by an effort of 500 N. Find its velocity ratio.
  1. 4


Solution

The correct option is A 4
Given,
Load = 2000 N
Effort = 500 N

Mechanical advantage, (M.A) = LoadEffort=2000500=4

Efficiency = M.A.V.R.

For an ideal pulley, the efficiency is 100% or 1.
Hence, the velocity ratio, V.R.=M.A.=4

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